token.app › Compare › Gemini 3.1 Pro Preview vs DeepSeek V4 Flash 0731

Gemini 3.1 Pro Preview vs DeepSeek V4 Flash 0731

Gemini 3.1 Pro Preview leads on 4 of 4 shared benchmarks. DeepSeek V4 Flash 0731 is 6.8× cheaper per token on a blended 3:1 basis.

Head to head
Blended price uses a 3:1 input:output mix
Gemini 3.1 Pro PreviewDeepSeek V4 Flash 0731
ProviderGoogleDeepSeek
Input $/1M$2.00$0.440
Output $/1M$12.00$1.32
Blended $/1M$4.50$0.660
Context window1.0M1.0M
Max output66K131K
ReleasedFeb 2026Jul 2026
LicenceProprietaryOpen weights
GPQA Diamond 94.4% 91.0%
FrontierMath T1–3 59.6% 57.5%
FrontierMath T4 26.8% 24.4%
OTIS Mock AIME 95.6% 94.4%
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose Gemini 3.1 Pro Preview if…
  • Higher GPQA Diamond (94.4% vs 91.0%)
  • Higher FrontierMath T1–3 (59.6% vs 57.5%)
  • Higher FrontierMath T4 (26.8% vs 24.4%)
  • Higher OTIS Mock AIME (95.6% vs 94.4%)
Choose DeepSeek V4 Flash 0731 if…
  • Costs less per token — $0.660 vs $4.50 blended
  • Open weights — self-hostable
  • Newer model (released Jul 2026)
FAQ
Which is better, Gemini 3.1 Pro Preview or DeepSeek V4 Flash 0731?
Across the 4 benchmarks both models have independently-run scores for, Gemini 3.1 Pro Preview leads on 4 and DeepSeek V4 Flash 0731 leads on 0. Benchmarks are one input — price and context window are on this page too.
Is Gemini 3.1 Pro Preview cheaper than DeepSeek V4 Flash 0731?
DeepSeek V4 Flash 0731 is cheaper: $0.660 versus $4.50 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $0.440. Output alone: $12.00 vs $1.32.
What context windows do Gemini 3.1 Pro Preview and DeepSeek V4 Flash 0731 have?
Gemini 3.1 Pro Preview: 1,048,576 tokens. DeepSeek V4 Flash 0731: 1,048,576 tokens.
Who makes Gemini 3.1 Pro Preview and DeepSeek V4 Flash 0731?
Gemini 3.1 Pro Preview is made by Google. DeepSeek V4 Flash 0731 is made by DeepSeek.
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